tan20^(@)+4sin20^(@)=

tan20^(0)+4 sin20^(0)=

(cos20^(@)-sin20^(@))/(cos20^(@)+sin20^(@))=tan25^(@)

Prove that (cos20^(@)-sin20^(@))/(cos20^(@)+sin20^(@))=tan 25^(@)

Prove that, (cos 20^(@) + sin 20^(@))/(cos 20^(@) - sin 20^(@)) = tan 65^(@)

Prove that :(cos20^(@)-sin20^(@))/(cos20^(@)+sin20^(@))=tan25^(@)

sin20^(@)(4+sec20^(@))=

tan20^(@)-tan80^(@)+sqrt(3)tan20^(@)tan80^(@)=

tan20^(@)+tan40^(@)+sqrt(3)tan20^(@).tan40^(@)=?

Prove that tan20^(@)+tan70^(@)=(sec^(2)20^(@))/(sqrt(sec^(2)20^(@)-1))

A=(cos9^(@)-sin9^(@))/(cos9^(@)+sin 9^(@)), B=(cos21^(@)+sin21^(@))/(cos21^(@)-sin21^(@)) and C=tan 20^(@)+tan 40^(@)+sqrt(3)tan20^(@)tan40^(@) then descending order is